Nipple



FIG. 1 is a perspective view of a nipple according to the present invention;

FIG. 2 is a top view of the nipple of FIG. 1;

FIG. 3 is a bottom view of the nipple of FIG. 1;

FIG. 4 is a side elevation view of the nipple of FIG. 1; and,

FIG. 5 is a cross sectional view along line 5—5 of FIG. 2. 

The ornamental design for nipple, as shown and described. 